Evaporating apparatus.



C, W. ZASTEOW. EVAPORATING APPARATUS.

APPLIGATION FILED JULY 31, 1911.

1,124,096, Patented Jan. 5, 1915.

2 SHEETS-SHEET l.

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C. W. ZASTROW.

EVAPORATING APPARATUS.

APPLICATION FILED JULY 31, 1911.

Patented Jan. 5, 1915.

2 SHEBTSSHEET 2.

WNW moo e0 @NITED @TATES PATENT @FFICE.

CHARLES WILLIAM ZASTBOW', OF WOODS; HOLE, MASSACHUSETTS.

EVAPORATING APPARATUS.

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Application filed July 31, 1911.

To (ZZZ whom it may concern Be it known that I, CnARLns W. ZAsTRow, a citizen of the United States of America, residing at lVoods Hole, in the county of Barnstable and State of Massachusetts, have invented certain new and useful Improvements in Evaporating Apparatus, of which the following is a specification, reference being had therein to the accompanying drawing.

Ihis invention relates to certain new and useful improvements in apparatus for evaporating or distilling water or other liquids. and has special reference to an apparatus which is particularly adapted to be used at sea for evaporating salt water, said apparatus being an improvement of the one set forth in my Patent No. 964,359, dated July 12, 1910.

The principal object of the present invention is the provision of an apparatus which is better adapted for the purpose specified in that the same is provided with one or more movable baffles which are capable of being lifted due to the violent ebullition or foaming of the liquid to be evaporated, and thus effectually prevent any traces of salt water being carried into the upper part of the evaporating still.

A further object of the invention is the provision of a novel. arrangement of heating manifolds and coils so that the heat from said manifolds and coils will be equally distributed to the liquid to be evaporated.

A still further object of the invention is the provision of an apparatus which will be simple in construction, and one which may be easily cleaned and readily accessible in case of repairs.

l/Vith these and other objects in view the invention consists of the novel construction and combination of parts hereinafter described and claimed.

In the drawings: Figure 1 is a vertical section of the apparatus embodying my present invention; Fig. 2 is a top plan view of the upper baiiie plate; Fig. 3 is a top plan view of the lower baffle plate; F ig. 4 is an enlarged cross-sectional view of the apparatus taken on the line 4-4: of Fig. 1; Fig. 5 is a top plan view of a modified construction of one of the manifolds, and Fig. 6 is a view in side elevation of one of the manifolds.

In carrying this invention into practice I preferably make use of a casing or recep- Specification of Letters Patent.

Patented J an. 5, 1915.

Serial No. 6%,545.

tacle 1, which in the present instance, is in the form of a vertically arranged cylinder, the same being closed at its top and bottom by the heads 2 and 3 respectively, thus making the casing or receptacle perfectly steam and water tight. The cylindrical casing is divided into two compartments, a water compartment, which is the lower one and indicated at 4, and a steam or vapor compartment which is the upper one, indicated at 5. These two compartments are separated one from the other by one or more baffie plates which have openings therein, and which openings are covered with fine wire gauze, thus permitting the steam, which is generated in the water compartment by the heating coils to be presently described, to pass through said baffle plates and into the steam compartment. The purpose of these baffles is to effectually prevent any of the salt water being carried with the steam into the steam space or compartment, and it is to be noted that in the present construction the baffle plates are movably mounted within the cylindrical casing and are capable of being lifted due to any violent ebullition or foaming of the water or other liquid being evaporated. In the drawings I have illustrated as my preferred construction two baffle plates, the lower one indicated at 6, and the upper one being indicated at 7. These battles are preferably made in sections as clearly illustrated in Figs. 2 and 3 of the drawings, which sections are bolted or otherwise secured to a casting 8, which encircles the inlet pipe of my heating system, and which is adapted to have a sliding movement thereon. It is to be noted that one of these castings is provided for each baffle plate, and that they are not connected in any way one to the other, thus permitting the baffle plates to have independent movement. As a means for supporting the baflie plates here shown in their normal or usual position, I provide a circular casting 9, U- shaped in cross section, and riveted or secured in any preferred manner to the inner side of the cylindrical casing above the heating coils and manifolds. It will thus be seen that the lower baffle plate will rest upon and be supported by the lower flange 10 of the U-shaped casing, said baffle plate only adapted to have a limited lifting movement, or a movement the distance between the two flanges of the U-shaped casting. The upper baifle plate is on the other hand, supported the head 3 of the casing.

by and rests upon the upper flange 11 of the U-shaped casting, and is therefore capable of having a greater lifting movement than the lower baffle plate. As heretofore re ferred to, the baffle plates are provided. with a number of openings, the same being indicated at 12, and these openings are covered with fine wire mesh gauze 13. It is to be noted that the openings 12 of the lower baflle plate are arranged nearer the periphery thereof than those in the upper battle, and in this manner a circuitous course is provided for the steam through said baffle plates, which considerably lessens the chance of any salt water being carried off with the steam.

it is to be noted that in devices of this character where the heating coils are immersed, foaming is liable to occur in the evaporator, and if such does occur, baffle plates of the type just described will serve to break up the globules of steam and water and the liberated steam may then pass to the steam space above said battles and then to the condenser without carrying traces of salt water. Any violent ebullition or foaming of the water or other liquid will cause the baffle plates to be lifted, and the tendency of the same will be to effectually pre vent the globules of steam and water from forcing their way through the screens.

It is proposed to use steam as the heating medium in connection with this apparatus, the same being fed through a pipe 1 1, which enters the cylindrical casing through a stuffing box 15 centrally positioned upon the head 2 of said casing. This pipe is arranged longitudinally of the casing and is centrally located therein, the same extending into the water compartment, and being connected to an upper manifold 16 by the cross-feed pipes 17 which are arranged at right angles to the inlet pipe, four of said pipes being shown in the arrangement illustrated in Fig. 4, whereas in Fig. 5 only two of the pipes 17 are shown. It is to be here noted that the baffle plates 6 and 7 are slidably mounted upon the inlet pipe 1% here referred to, and as above described said baffle plates serve to divide the cylindrical casing into two compartments, the heating apparatus to be now described being located in the lower or water compartment. A series of coils 18 connect the upper manifold 16 with a lower n1anifold'lt), which manifold 19 is connected in any suitable manner to an outlet pipe 20, but preferably by means of a plurality of cross-feed pipes similar to the pipes 17 which connect the inlet pipe to the upper manifold. The outlet pipe 20 is also arranged longitudinally of the cylindrical casing and centrally located with regard thereto, the same passing from the water compartment through a stuthng box on In this manner live steam is fed from a suitable generator to the steam heating coils 18, which coils serve to thoroughly heatthe water within the compartment at and generate steam, which steam rises and passes through the screened openings in the baffle plates and is collected within the compartment 5, from whence it escapes through an outlet pipe 22, and is led away to any suitable form of condenser in which it is condensed into purified water.

A suitable gage 23 is provided for the purpose of determining at any time the amount of water in the casing, and a steam gage 24-. is shown in dotted lines and serves to indicate the steam pressure occasioned by the steam generated in the casing. I also provide a suitable safety or blow-off valve for the steam compartment, the same being indicated at 25 in dotted lines, and a blowoff valve 26 arranged in the lower manifold for a purpose which will be obvious.

In the practice of my invention the water or other liquid to be purified or evaporated is carried into the water compartment through a pipe 27, and the same is converted into steam in the manner heretofore described, whereupon said steam is conveyed from the casing and condensed into purified liquid. The heating apparatus used for generating this steam, as will be noted, has an inlet pipe and an outlet pipe which are centrally located within the casing, said pipes passing through the upper and lower stuffing boxes, respectively, as heretofore de scribed, and being adapted to turn within the same, so that the heating apparatus as a whole may be revolved upon its vertical aXis to facilitate the cleaning and scaling of the salt and other defects which have been deposited on the heating surface. A suitable door is indicated at 28 which closes the opening in the side of the casing, and it will be readily understood that any one of the heating coils 18 may be brought opposite this opening when it is desired to clean the same, thus obviating the necessity of removing the coils from the apparatus. It is also to be noted that any one of the coils may be taken out through this opening and another set up in its place without the necessity of disturbing any other coils, furthermore, suitable connections between all the parts contained within the casing are provided, which will permit the entire apparatus being taken apart within the casing and removed therefrom through the opening in the side of said casing. This will be perfectly obvious upon an examination of the drawing, it only being necessary to state that a coupling 29 in the inlet pipe is used so that the upper sectionof the inlet pipe may be disconnected or withdrawn through the top of the casing; and a coupling 30 is used for the outlet pipe which allows the upper section thereof to be lifted Within the casing and withdrawn through the opening in the casing.

The heating apparatus as just described, is somewhat differently constructed and arranged from the apparatus set forth in my former patent herein referred to, in that a plurality of cross-feed pipes 17 are provided for the purpose of connecting the inlet and outlet pipes with the upper and lower inanifolds respectively, and that extra heating coils 81 may thus be us'd for connecting the cross-feed pipes of the upper manifold with those of the lower manifold. In this manner heating coils are provided for the entire water space, and heat from said coils and the manifolds will thus be equally distributed to the liquid to be evaporated.

Having thus described my invention, what I claim is:

1. An evaporating apparatus, comprising a casing or receptacle having liquid and steam spaces therein, a baflie slidably mounted Within said casing, and a channel iron or casting secured to said casing and adapted to serve as a support for the battle and limit the same in its upward and downward movement.

2. An evaporating apparatus, comprising a casing or receptacle having liquid and steam spaces therein, a channel iron or casting secured to the inner side of said casing and having a plurality of flanges, and a plurality of movable baffies arranged Within the casing, each flange of said channel iron or casting adapted to serve as a support for one of the battles:

An evaporating apparatus, comprising a casing or receptacle having liquid and steam spaces therein, a steam inlet pipe entering said casing, a plurality of cross-feed pipes leading from said inlet pipe, a manifold communicating with said cross-feed pipes, a plurality of steam heating coils de pending from said manifold and cross-feed pipes, a second manifold having communication With the first mentioned manifold by means of certain of the heating coils, a sec- 0nd set of cross-feed pipes connected to the second mentioned manifold and also having communication with the first mentioned cross-feed pipes by other of the heating coils, and a steam outlet pipe connected to said second mentioned cross-feed pipes, and leading Without the casing.

4. An evaporating apparatus, comprising a casing or receptacle having liquid and steam spaces therein, and a plurality of baffle plates slidably mounted within the casing and having independent movement therein, said baflies also having openings therein arranged in staggered relation.

5. An evaporating apparatus, comprising a casing or receptacle having liquid and steam spaces therein, a plurality of battle plates arranged within said casing and adapted for independent movement therein.

6. An evaporating apparatus, comprising a casing or receptacle having liquid and steam spaces therein, and a baflie having sufficient up and down movement within said casing to serve alone as the means for preventing the liquid entering the steam space.

7. An evaporating apparatus, comprising a casing, and a bafile separating the easing into two compartments, said baffle having such movement Within the casing as to effectually prevent water passing therethrough but allowing for the passage of steam at all times when the apparatus is in operation.

8. An evaporating apparatus, comprising a casing or receptacle having liquid and steam spaces therein, and a battle movably mounted within said casing, said bailie serving as a means to prevent the liquid passing into the steam space, but allowing the steam to pass therethrough at all times when the apparatus is in use.

In testimony whereof I haveafiixed my signature in presence of two Witnesses.

CHARLES WFILLIAM ZASTROW. Witnesses:

VALTER O. LUsooMBn, Horace B. Dnnrs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

